"Scene Group Not Allowed" Message

[Xray]

A kid on Algobox posted a "Help Me" scene because he keeps getting an error message "Scene Group Not Allowed" when he tries to upload a particular scene. I originally assumed that he uses a standard browser, but apparently he uses the Algodoo built-in browser for posting scenes. I do not know a thing about the Algodoo browser and so I am not able to help him. Here is his message scene if someone wants to respond to his request: http://www.algodoo.com/algobox/details.php?id=150868

Thanks!